How to spell HALLOUWEN correctly?

Hallouwen could be corrected to "Halloween", a holiday celebrated on October 31st where people dress up in costumes and go trick-or-treating. It could also be corrected to "Hallooween", which could be a stylized version of the same holiday.

• Hallowed The hallowed halls of the university were filled with the wisdom of generations past.
• Halloween I am excited to dress up for Halloween this year and go trick-or-treating with my friends.

Opeits

• apes
• eats
• edits
• emits
• epics
• its
• oats
• obits
• odes
• odets